package com.jlu.service;

public class DemoService {
  public String sayWhat;
  public String toWho;
  public DemoService(String sayWhat, String toWho){
    this.sayWhat = sayWhat;
    this.toWho = toWho;
  }
  public String say(){
    return this.sayWhat + "!  " + toWho;
  }
}
